[1] B. Csákány: Homogeneous algebras. Contributions to General Algebra, Proc. Klagenfurt Conference, 1978, Verlag J. Heyn, Klagenfurt, 1979, pp. 77–81. MR 0537408
[2] M. Droste, M. Giraudet and D. Macpherson: Set-homogeneous graphs and embeddings of total orders. Order 14 (1997), 9–20. DOI 10.1023/A:1005880810385 | MR 1468952